433314
Pyrophosphoric acid
technical grade
Synonym(s):
Diphosphoric acid
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About This Item
Linear Formula:
(HO)2P(O)OP(O)(OH)2
CAS Number:
Molecular Weight:
177.98
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352106
EC Number:
219-574-0
MDL number:
Assay:
≥94% (by NaOH, titration)
Form:
liquid, solid, waxy solid
Grade:
technical grade
InChI key
XPPKVPWEQAFLFU-UHFFFAOYSA-N
InChI
1S/H4O7P2/c1-8(2,3)7-9(4,5)6/h(H2,1,2,3)(H2,4,5,6)
SMILES string
OP(O)(=O)OP(O)(O)=O
grade
technical grade
assay
≥94% (by NaOH, titration)
form
liquid, solid, waxy solid
technique(s)
ion chromatography: suitable
impurities
≥20% H3PO4
Quality Level
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Application
Pyrophosphoric acid (diphosphoric acid) may be used in the following processes:
- As chemical activator in the preparation of activated carbon from leather waste.
- To modify the surface of calcium hydroxyapatite in order to improve the surface functionality.
- To modify the surface strontium aluminate nanoparticles potential applications in super-long time in vivo imaging.
- Synthesis of bis(diisopropylammonium) dihydrogendiphosphate trihydrate (DIPAP).
- Synthesis of novel 3-methoxybenzylammonium cation diphosphate.
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Skin Corr. 1B
Storage Class
8B - Non-combustible corrosive hazardous materials
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Structure of synthetic calcium hydroxyapatite particles modified with pyrophosphoric acid.
Tanaka H, et al.
Journal of Colloid and Interface Science, 283(2), 609-612 (2005)
Preparation and characterization of activated carbon from leather waste microwave-induced pyrophosphoric acid activation.
Kong J, et al.
Journal of Analytical and Applied Pyrolysis, 104, 710-713 (2013)
Persistent luminescent nanoparticles for super-long time in vivo and in situ imaging with repeatable excitation.
Sun M, et al.
Journal of Luminescence, 145, 838-842 (2014)
Surface modification of calcium hydroxyapatite with pyrophosphoric acid.
Tanaka H, et al.
Journal of Colloid and Interface Science, 269(2), 358-363 (2004)
Crystal Structure, 31P, 13C NMR, IR Spectroscopy Investigations and Thermal Behavior of Bis (diisopropylammonium) dihydrogendiphosphate trihydrate.
Guelmami L and Jouini A.
Journal of Chemical Crystallography, 42(12), 1162-1169 (2012)
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